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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef JETPLAYER_H_
     18 #define JETPLAYER_H_
     19 
     20 #include <utils/threads.h>
     21 
     22 #include <libsonivox/jet.h>
     23 #include <libsonivox/eas_types.h>
     24 #include <media/AudioTrack.h>
     25 #include <media/MidiIoWrapper.h>
     26 
     27 
     28 namespace android {
     29 
     30 typedef void (*jetevent_callback)(int eventType, int val1, int val2, void *cookie);
     31 
     32 class JetPlayer {
     33 
     34 public:
     35 
     36     // to keep in sync with the JetPlayer class constants
     37     // defined in frameworks/base/media/java/android/media/JetPlayer.java
     38     static const int JET_EVENT                   = 1;
     39     static const int JET_USERID_UPDATE           = 2;
     40     static const int JET_NUMQUEUEDSEGMENT_UPDATE = 3;
     41     static const int JET_PAUSE_UPDATE            = 4;
     42 
     43     JetPlayer(void *javaJetPlayer,
     44             int maxTracks = 32,
     45             int trackBufferSize = 1200);
     46     ~JetPlayer();
     47     int init();
     48     int release();
     49 
     50     int loadFromFile(const char* url);
     51     int loadFromFD(const int fd, const long long offset, const long long length);
     52     int closeFile();
     53     int play();
     54     int pause();
     55     int queueSegment(int segmentNum, int libNum, int repeatCount, int transpose,
     56             EAS_U32 muteFlags, EAS_U8 userID);
     57     int setMuteFlags(EAS_U32 muteFlags, bool sync);
     58     int setMuteFlag(int trackNum, bool muteFlag, bool sync);
     59     int triggerClip(int clipId);
     60     int clearQueue();
     61 
     62     void setEventCallback(jetevent_callback callback);
     63 
     64     int getMaxTracks() { return mMaxTracks; };
     65 
     66 
     67 private:
     68     int                 render();
     69     void                fireUpdateOnStatusChange();
     70     void                fireEventsFromJetQueue();
     71 
     72     JetPlayer() {} // no default constructor
     73     void dump();
     74     void dumpJetStatus(S_JET_STATUS* pJetStatus);
     75 
     76     jetevent_callback   mEventCallback;
     77 
     78     void*               mJavaJetPlayerRef;
     79     Mutex               mMutex; // mutex to sync the render and playback thread with the JET calls
     80     pid_t               mTid;
     81     Condition           mCondition;
     82     volatile bool       mRender;
     83     bool                mPaused;
     84 
     85     EAS_STATE           mState;
     86     int*                mMemFailedVar;
     87 
     88     int                 mMaxTracks; // max number of MIDI tracks, usually 32
     89     EAS_DATA_HANDLE     mEasData;
     90     MidiIoWrapper*      mIoWrapper;
     91     EAS_PCM*            mAudioBuffer;// EAS renders the MIDI data into this buffer,
     92     sp<AudioTrack>      mAudioTrack; // and we play it in this audio track
     93     int                 mTrackBufferSize;
     94     S_JET_STATUS        mJetStatus;
     95     S_JET_STATUS        mPreviousJetStatus;
     96 
     97     class JetPlayerThread : public Thread {
     98     public:
     99         JetPlayerThread(JetPlayer *player) : mPlayer(player) {
    100         }
    101 
    102     protected:
    103         virtual ~JetPlayerThread() {}
    104 
    105     private:
    106         JetPlayer *mPlayer;
    107 
    108         bool threadLoop() {
    109             int result;
    110             result = mPlayer->render();
    111             return false;
    112         }
    113 
    114         JetPlayerThread(const JetPlayerThread &);
    115         JetPlayerThread &operator=(const JetPlayerThread &);
    116     };
    117 
    118     sp<JetPlayerThread> mThread;
    119 
    120 }; // end class JetPlayer
    121 
    122 } // end namespace android
    123 
    124 
    125 
    126 #endif /*JETPLAYER_H_*/
    127